Adv Antest Corporation

Minoru Soma

Jun Matsumoto

Akio Yamada

Masahiro Takizawa

Shigeki Nishina

Shinji Sugatani

Provided is a three-dimensional laminating and shaping apparatusincluding a column unitthat is configured to output an electron beam EB and deflect the electron beam EB toward the front surface of a powder layer, an insulating portion that electrically insulates a three-dimensional structurefrom a ground potential member, an ammeterthat is configured to measure the current value indicative of the current flowing into the ground after passing through the three-dimensional structure, a melting judging unitthat is configured to detect that the powder layeris melted based on the current value measured by the ammeterand generate a melting signal, and a deflection controllerthat is configured to receive the melting signal to determine the condition for the irradiation with the electron beam.

Three-dimensional laminating and shaping apparatus and laminating and shaping method

Provided is a three-dimensional laminating and shaping apparatusincluding a column unitthat is configured to output an electron beam EB and deflect the electron beam EB toward the front surface of a powder layer, an electron detectorthat is configured to detect electrons that may be emitted in a predetermined direction from the front surface of the powder layerwhen the powder layeris irradiated with the electron beam EB, a melting judging unitthat is configured to generate a melting signal based on the strength of the detection signal from the electron detector, and a deflection controllerthat is configured to receive the melting signal to determine the condition of the irradiation the electron beam.

Growing community of inventors

Saitama, Japan

Minoru Soma